963e3427da
Site Call Audit (#22): build the documented periodic reconciliation PULL self-heal path for the eventually-consistent central SiteCalls mirror, as a dedicated PullSiteCalls gRPC RPC kept separate from the audit pull. This is the pull PLUMBING only; the central reconciliation tick is a separate follow-up. - IOperationTrackingStore.ReadChangedSinceAsync(sinceUtc, batchSize): inclusive UpdatedAtUtc cursor, oldest-first, batch-capped; SQLite impl projects tracking rows onto SiteCallOperational (Kind->Channel, TargetSummary->Target, SourceSite left empty - the store has no site-id column). - sitestream.proto: rpc PullSiteCalls + PullSiteCallsRequest/Response, mirroring PullAuditEvents; regenerated checked-in SiteStreamGrpc/*.cs. - SiteCallDtoMapper.ToDto(SiteCallOperational): inverse of FromDto for the handler. - SiteStreamGrpcServer.PullSiteCalls handler + SetOperationTrackingStore seam; Host wires the seam alongside SetSiteAuditQueue (site roles only). - Central IPullSiteCallsClient + GrpcPullSiteCallsClient (home: AuditLog/Central to reuse ISiteEnumerator; SiteCallAudit does not reference AuditLog). Re-stamps SourceSite from the dialed siteId; no-throw on tolerable transport faults; SpecifyKind (not ToUniversalTime) cursor handling. Central-only DI registration. Tests: ReadChangedSinceAsync (4), PullSiteCalls handler (6), GrpcPullSiteCallsClient (8). Full solution build 0 warnings/0 errors (TreatWarningsAsErrors).